RU96541U1 - DEVICE FOR OPERATING HYBRID POWER PLANT WITH STARTER-GENERATOR DEVICE - Google Patents

Abstract

 1. Device for controlling the operation of a hybrid power plant with a starter-generator device of a vehicle containing an internal combustion engine (1), gearbox (2), driveshaft (3), drive wheels (4), gearbox input shaft (5) (2), clutch (6), output shaft (7) of the engine (1), electric machine (8), crankshaft (9) of the engine (1), flywheel (10), battery block (11) of the electric power supply system a vehicle, the gearbox (2) transmitting via a driveshaft (3) a drive the force on the drive wheels (4) of the vehicle, the input shaft (5) of the gearbox (2) is capable of transmitting through the clutch (6) the drive force from the output shaft (7) of the engine (1) to the driveshaft (3), an electric machine ( 8) it is possible in the mode of the electric motor of the starter to transmit its own drive force to the output shaft (7), interlocked with the crankshaft (9) and with the flywheel (10) of the engine (1), and in the generator mode to recharge the battery block (11), and also containing an electronic control unit (12) the motor (1), the power converter unit (13), electric cables (14), (15), the control controller (16), and the power supply to the converter unit (13) is supplied via cables (14) and (15) from electric machines (8) to the unit (11) and vice versa - depending on the signal of the control controller (16), and the electronic unit (12) for controlling the operation of the engine (1), the sensor (18) for the degree of charge of the unit (11) containing the sensor (17) batteries, the sensor (19) of the operating mode of the electric machine (8), the sensor (20) of the operating mode of the converter (13), the sensor (21) of the position of the ignition key (22), the sensor

Description

The invention relates to a device for driving a vehicle with an internal combustion engine, namely, to hybrid power plants of vehicles and can be used in mechanical engineering.

The hybrid propulsion system of a vehicle has a DC power supply of a battery pack, a converter, a control controller and an internal combustion engine that is started by an electric machine (electric machine) in addition to an internal combustion engine, that is, a hybrid power plant with a starter-generator device has the ability to drive not only from an internal combustion engine, but also from an electric machine both in the process of starting the engine and when driving nogo funds.

The known hybrid propulsion system of a vehicle with a starter-generator device has an internal combustion engine, a planetary gear unit including a carrier and a gear ring, respectively connected to an engine crankshaft and a drive shaft, a first electric motor connected to a sun gear of a planetary gear unit, a second an electric motor connected to the drive shaft and a battery capable of transmitting electrical energy to and from the first electric motor in the second electric trodvigatel and away (see., e.g., Japanese Patent Laid-Open Gazette №11-93727). In this hybrid installation, the first electric motor is driven and controlled to control the speed of the internal combustion engine. The device is complex in design, it takes into account a limited number of vehicle parameters, and for this reason is not efficient enough.

A closer analogue of the present invention is known in the form of a vehicle drive control device with an internal combustion engine (RF Patent for the invention No. 2221161 C2, 01/10/2004). In accordance with this known device, a power unit for vehicles having an internal combustion engine (ICE) and a main gearbox that transfers drive force to a drive wheel of a vehicle, a primary shaft, which can be kinematically connected to an output shaft of an internal combustion engine, and also having an electric machine that has the ability to kinematically connect through an intermediate gearbox to the main gearbox and has the ability to switch to electronic mode a starter motor to start the internal combustion engine and to work in generator mode to power the vehicle's electrical on-board network. In this case, the output shaft of the internal combustion engine and the primary shaft of the main gearbox, as well as the electric machine through the intermediate gearbox, are able to kinematically connect to each other and to the fly mass using at least one controlled clutch.

Additionally, in this power unit, an electric machine is kinematically connected via a step-type intermediate gearbox to the input shaft of the main gearbox and an electronic control unit is provided that is capable of controlling at least one clutch as well as an electric machine based on information about the engine shaft speed , wheel speed and the required mode of operation of the main gearbox.

Along with the implementation of the hybrid power plant control functions according to the specified parameters, the main disadvantages of the known device are the insufficient parameters taken into account by the electronic unit, the design complexity, a large number of units, increased weight, dimensions, and insufficient reliability.

A device is also known for controlling the operation of a hybrid power plant with a starter-generator device (RF Patent for the invention No. 2334624 C2, September 7, 2008). In accordance with this device, adopted as a prototype of the present invention, controlling the operation of a hybrid power plant with a starter-generator device of a vehicle containing an internal combustion engine, a gearbox that transfers a drive force to the drive wheels of the vehicle and the input shaft of which has the ability to transmission through the clutch of the drive force from the output shaft of the engine to the driveshaft, as well as containing an electric machine that has there is the possibility in the mode of the electric motor of the starter to transmit its own drive force to the output shaft, interlocked with the crankshaft and with the engine flywheel, and in the generator mode to recharge the battery pack of the vehicle’s electrical onboard power supply system and containing the electronic engine control unit, a converter supply current supplied through cables from the electric machine to the battery pack and vice versa - depending on the signal of the control controller by a the operating algorithm, taking into account the flow of data from the sensor of the electronic engine control unit, the battery charge state sensor, the electric machine operating mode sensor, the converter operating mode sensor, the ignition key position sensor, the gear lever position sensor, the accelerator pedal position sensor, the position sensor brake pedal, vehicle speed sensor device.

However, the known prototype also has drawbacks in the complexity of the design, in particular in the presence of two electric machines and two converters, in the insufficient number of parameters taken into account in the electronic control unit (control controller). These shortcomings in operating conditions lead to insufficient quality control of the hybrid power plant, insufficient reliability of its operation, large weight and dimensions of the devices.

The aim of the present invention is to create a compact device as a whole, simplify the control circuit and, at the same time, increase the parameters taken into account in the control circuit, which should allow to increase the efficiency of the proposed device both in terms of reducing operating fuel consumption and in terms of reducing harmful substances into the atmosphere when applied.

Additional objectives of the invention are to increase reliability, reduce weight and dimensions of the device.

The goals are achieved in that in the proposed device for controlling the operation of a hybrid power plant with a starter-generator device of a vehicle containing an internal combustion engine, a gearbox, a driveshaft, drive wheels, a transmission primary shaft, a clutch, an engine output shaft, an electric machine , the crankshaft of the engine, the flywheel, the battery pack of the vehicle’s onboard power supply system, the gearbox transmitting by cardan about the shaft, the drive force on the drive wheels of the vehicle, the input shaft of the gearbox is able to transmit the drive force through the clutch from the engine output shaft to the driveshaft, the electric machine is able to transfer its own drive force to the output shaft, blocked with the crankshaft, in the electric motor mode of the starter with the engine flywheel, and in the generator mode, recharge the battery pack, and also containing the electronic engine control unit, a k-converter of the supply current, electric cables, a control controller, and the supply current of the converter unit is supplied via cables from the electric machine to the block and, conversely, depending on the signal of the control controller, and the sensor containing the electronic control unit for engine operation, the degree of charge of the block batteries, sensor of the operating mode of the electric machine, sensor of the operating mode of the converter, sensor of the position of the ignition key, sensor of the position of the gear shift lever, sensor of the pedal position accelerator, brake pedal position sensor, vehicle speed measuring device sensor, each of which is interlocked with a control controller. The power of the electric machine does not exceed 15% of the engine power. The electric machine, clutch, flywheel, speed meter are mounted coaxially with the crankshaft of the engine inside a single unit, consisting of the front of the engine and the clutch housing. Additionally, the device is equipped with a coolant temperature sensor in the engine cooling system, a sensor for measuring the speed of the engine output shaft, and a clutch operation mode sensor, which are also interlocked with the control controller. For incoming data from all sensors, threshold parameters are set, for example, for engine speed, vehicle speed, coolant temperature, degree of charge of the battery pack, accelerator pedal position, brake, clutch, gear lever, ignition key, electronic operating mode engine control unit, and according to the transmitted data which according to the set algorithms control the operation of the hybrid power plant in the following modes: “stop-start”, “idle”, “Torque control”, “recovery” and “displacement”.

In addition, the device is additionally equipped with a liquid cooling system according to the bypass circuit with respect to the engine cooling system, in which a common single coolant circulates.

The device is characterized in that its operation is blocked at an outdoor temperature above - 10 ° C.

The device is additionally equipped with a sensor for fixing the driver of the vehicle on the seat and, in the absence of the driver, blocks the operation of the device.

Finally, the device is additionally equipped with a digital display in front of the driver’s workplace, which displays the operating parameters of the device’s systems.

Figure 1 shows a structural diagram of a device for controlling the operation of a hybrid power plant with a starter-generator device for a vehicle, and figure 2 separately shows the design of a single compact unit of the device, which houses an electric machine, a flywheel, a clutch and a speed meter.

Figure 1 shows a device for controlling the operation of a hybrid power plant with a starter-generator device of a vehicle, which contains an internal combustion engine (1), a gearbox (2), a driveshaft (3), drive wheels (4), a primary shaft ( 5) gearboxes (2), clutch (6), motor output shaft (7) (1), electric machine (8), engine crankshaft (9) (1), flywheel (10), battery block (11) electric vehicle power system, the gearbox (2) transmitting via cardan drive shaft (3) drive force on the drive wheels (4) of the vehicle, the input shaft (5) of the gearbox (2) can transmit the drive force through the clutch (6) from the output shaft (7) of the engine (1) to the driveshaft ( 3), the electric machine (8) has the ability in the mode of the electric motor of the starter to transmit its own drive force to the output shaft (7), interlocked with the crankshaft (9) and with the flywheel (10) of the engine (1), and in the generator mode to make a block (11) rechargeable batteries. It also contains an electronic engine control unit (12) for controlling the operation of the engine (1), a power converter unit (13), electric cables (14), (15), a control controller (16), and the power supply to the converter unit (13) is supplied via cables (14) and (15) from the electric machine (8) to the block (11) and vice versa - depending on the signal of the control controller (16). The device contains a sensor (17) of the electronic unit (12) for controlling the operation of the engine (1), a sensor (18) for the degree of charging of the block (11) of the batteries, a sensor (19) for the operation mode of the electric machine (8), a sensor (20) for the operation mode of the converter ( 13), the ignition key position sensor (21) (22), the gear shift lever position sensor (2) (2), the accelerator pedal position sensor (24) (25), the brake pedal position sensor (26) (27), the sensor (28) vehicle speed measuring devices (29), each of which is interlocked with a control controller (16). The power of the electric machine (8) does not exceed 15% of the engine power (1). An electric machine (8), a clutch (2), a flywheel (10), a speed meter (33) are mounted coaxially with the crankshaft (9) of the engine (1) inside a single block (35), consisting of the front of the engine (1) and the clutch housing (6) - see figure 2. Additionally - see figure 1, the device is equipped with a sensor (30) of the coolant temperature in the engine cooling system (31) (1), a sensor (32) of the meter (33) of the output shaft speed (7) of the engine (1), a sensor (34 ) the operating mode of the clutch (6), which are also interlocked with the control controller (16), moreover, threshold parameters are set for the data arriving from the last sensor, for example, for engine speed, vehicle speed, coolant temperature, unit charge level (11 ) batteries accelerator pedals (25), brakes (27), clutch (6), gear lever (2), ignition key (22), operation mode of the electronic engine control unit (12) (1), and according to the transmitted data which are set the algorithms control the operation of the hybrid power plant in the following modes: “stop start”, “idle”, “torque control”, “recovery” and “displacement”.

The device for controlling the operation of the hybrid power plant is additionally equipped with a liquid cooling system according to the bypass circuit with respect to the engine cooling system, in which a common single cooling fluid circulates (not shown in Figs. 1, 2).

A device for controlling the operation of a hybrid power plant is blocked at an outdoor temperature above - 10 ° C.

The device for controlling the operation of the hybrid power plant is additionally equipped with a sensor for fixing the position of the driver of the vehicle on the seat and, in the absence of the driver, blocks the operation of the device (not shown in FIGS. 1, 2).

The device is also additionally equipped with a digital display in front of the driver’s workplace, displaying the operating parameters of the device’s systems (not shown in FIGS. 1, 2).

The operation of the device is as follows.

The operation of the hybrid power plant with the vehicle’s starter-generator device is controlled at an electric machine power (8) of a value not exceeding 15% of the vehicle’s internal combustion engine power (1). In the control controller (16) enter the data of the sensor (17) of the electronic unit (12) for controlling the engine (1), the sensor (18) of the degree of charge of the battery unit (11), the sensor (19) of the operation mode of the electric machine (8), the sensor ( 20) the operating mode of the converter unit (13), the sensor (21) of the position of the ignition key (22), the sensor (23) of the position of the gear lever (2), the sensor (24) of the position of the accelerator pedal (25), the sensor (26) the position of the brake pedal (27), the sensor (28) of the vehicle speed measuring device (29), the temperature sensor (30) azhdayuschey fluid in system (31) cooling the motor (1), the sensor (32) the meter (33) output shaft (7) of the engine (1), the sensor (34) working mode clutch (6). For incoming data to the control controller (16) from the sensors, the threshold parameters of the engine speed (1), vehicle speed (29), coolant temperature (31), degree of charge of the battery pack (11), accelerator pedal positions (25) are set brakes (27), clutch (6), gear lever (2), ignition key (22), operating mode of the electronic control unit (12) by the engine (1), and taking into account the incoming data, control the operation of the hybrid power plant in the following modes: " stop start "," idling "," unitary enterprise The pressure torque "," recovery "and" substitution ", each of which is set by a separate control algorithm.

The hybrid power plant is controlled in the “stop-start” mode only when the degree of charging of the battery pack (11) is higher than the lower threshold parameter at 70% of its maximum value, at outdoor temperatures above -10 ° C, with closed doors and the trunk of the vehicle means, when the driver is in the driver's seat, fixed by the driver’s position sensor and only when the ignition key (22) is turned on and the coolant temperature in the cooling system (31) is more than 75 ° C by turning off the engine (1) when the vehicle stops and the engine is turned on (1) using an electric machine (8). In this case, the engine (1) is turned off by stopping the supply of fuel to it using the electronic control unit (12) by the action of the control controller (16) when the accelerator pedal (25) is pressed, the gear lever (2) is in the neutral position and when it stops completely vehicle, subject to vehicle braking before stopping starting at a speed of 5 km / h for more than 2 seconds, and the engine (1) is switched on using an electric machine (8) by applying voltage to the electric machine (8) from eye batteries (11) and enable operation of the electronic engine control unit (12), produced by master controller (16) after the accelerator pedal depression by the driver (25). After starting the engine (1), it is transferred to the “idle” operating mode with the gearshift lever (2) in neutral and “displacement” mode with the lever (2) off.

The operation of the hybrid power plant in the “idle” mode is controlled by the operation of the internal combustion engine (1) without the participation of an electric machine (8). After starting the engine with an electric machine (8), the battery pack (11) is recharged, while in the process of driving the vehicle, this mode is set when the brake pedals (27) and accelerator (25) are not pressed, the gear lever (2) is in neutral position, or with the clutch pedal depressed (6). When the vehicle is stationary, this mode is set by moving the gear lever (2) to the neutral position or by pressing the clutch pedal (6). Also, the “idle” mode is set during sudden braking of the vehicle with its full stop for up to 2 seconds. starting at a speed of 5 km / h.

The operation of the hybrid power plant in the "torque control" mode is carried out by increasing the torque on the output shaft (7) of the engine (1) using an electric machine (8) in the generator operating mode, in which the driver sets the vehicle using the accelerator pedal ( 25) the torque is set by more than 90% of the torque developed at the corresponding revolutions of the crankshaft (9) by the engine (1). The generator operating mode of the electric machine (8) in this case generates up to 10% of the total torque and is set when the vehicle is moving at engine speeds (1) of more than 1200 rpm, the degree of charge of the battery pack (11) is more than 70%, and when the clutch is disengaged (6), the gearbox lever (2) is in the neutral position and the accelerator pedal (25) is not depressed, the engine (1) is put into idle mode. When the degree of charging of the battery pack (11) is less than 70%, the operation of the electric machine (8) is turned off and the developed torque on the shaft (7) is set only due to the operation of the internal combustion engine (1).

In the “recovery” mode, the battery pack (11) is charged using an electric machine (8) at a vehicle speed of more than 6 km / h, the gear lever (2) is on, the clutch pedal (6) is released and the position is depressed brake pedals (27). This is done by turning on the operation of the electric machine (8) in the generator mode by the control controller (16), transferring the generated current from the electric machine (8) through the converter unit (13) to the battery unit (11). When the vehicle speed is less than 6 km / h, the gearbox lever (2) is in neutral position, the clutch pedal is pressed (6) and the brake pedal is not depressed (27), the engine is put into “idle” mode.

The hybrid power plant operation control in the “displacement” mode is set by transmitting the driving force to the vehicle wheels (4) mainly from the electric machine (8) operating in the “traction” mode, and the engine power (1) is set according to the value required only for compensation differences in power between the power set by the driver using the accelerator pedal (25) at the corresponding engine speeds (1) and the generated power of the electric machine (8) at engine speeds of less than 1200 rpm, conveyor speeds Nogo means less than 7 km / h. when the degree of charging of the battery pack (11) is more than 70%, the gear lever position (2) is on. When the degree of charging of the battery pack (11) is less than 70%, the engine speed is more than 1200 rpm and the vehicle speed is more than 7 km / h, the operation of the hybrid power plant is transferred to the “control” mode, and when the gear lever is in the neutral position ( 2) and the released accelerator pedal (25) - to the "idle" mode.

Equipping a device for controlling the operation of a hybrid power plant with a liquid cooling system according to a bypass circuit with respect to the engine cooling system, in which a common unified coolant circulates, makes it possible to organize its effective cooling during operation.

The device is blocked at an outdoor temperature above -10 ° C.

It is additionally equipped with a sensor for fixing the position of the driver of the vehicle on the seat and, in the absence of the driver, blocks the operation of the device.

The device for controlling the operation of the hybrid power plant is also additionally equipped with a digital display in front of the driver’s workplace, which displays the operating parameters of the device’s systems.

The use of the proposed device for controlling a hybrid power plant with a starter-generator device allows to increase efficiency due to:

- compact design of a single unit of the device in which the electric machine (8), clutch (2), flywheel (10) and speed meter (33) are placed;

- increase the number of parameters when controlling the operation of a hybrid power plant;

- simplification of the control circuit itself as a result of the use of one electric machine (8) placed coaxially on the shaft (7) of transmitting the drive force from the internal combustion engine (1) and electric machine (8) to the wheels (4) of the vehicle;

- dividing the control of the control system into 5 separate modes, namely: “stop-start”, “idle”, “torque control”, “recovery” and “substitution”, each of which controls according to a separate preset algorithm.

As a result of the practical application of this device for controlling a hybrid power plant with a starter-generator device on a vehicle, in which the “stop-start” operating modes are implemented, acceleration with a crankshaft from the electric machine in the “coast” mode and uniform movement, vehicle braking mode means by an electric machine (8) with recharging of the battery pack (11), especially in urban operating conditions, the following results are achieved:

- reduction in fuel consumption on a vehicle with a gross weight of up to 3.5 tons in urban operating conditions is more than 20%;

- emissions of harmful substances from the exhaust gases of internal combustion engines are reduced;

- the relative decrease in the braking distance of the vehicle in comparison with the analogue without a hybrid power plant is at least 10%.

Claims (5)

1. Device for controlling the operation of a hybrid power plant with a starter-generator device of a vehicle containing an internal combustion engine (1), gearbox (2), driveshaft (3), drive wheels (4), gearbox input shaft (5) (2), clutch (6), output shaft (7) of the engine (1), electric machine (8), crankshaft (9) of the engine (1), flywheel (10), battery block (11) of the electric power supply system a vehicle, the gearbox (2) transmitting via a driveshaft (3) a drive the force on the drive wheels (4) of the vehicle, the input shaft (5) of the gearbox (2) is capable of transmitting through the clutch (6) the drive force from the output shaft (7) of the engine (1) to the driveshaft (3), an electric machine ( 8) it is possible in the mode of the electric motor of the starter to transmit its own drive force to the output shaft (7), interlocked with the crankshaft (9) and with the flywheel (10) of the engine (1), and in the generator mode to recharge the battery block (11), and also containing an electronic control unit (12) the motor (1), the power converter unit (13), electric cables (14), (15), the control controller (16), and the power supply to the converter unit (13) is supplied via cables (14) and (15) from electric machines (8) to the unit (11) and vice versa - depending on the signal of the control controller (16), and the electronic unit (12) for controlling the operation of the engine (1), the sensor (18) for the degree of charge of the unit (11) containing the sensor (17) batteries, the sensor (19) of the operating mode of the electric machine (8), the sensor (20) of the operating mode of the converter (13), the sensor (21) of the position of the ignition key (22), the sensor to (23) the position of the gear shift lever (2), the accelerator pedal position sensor (25) (25), the brake pedal position sensor (26), the sensor (28) of the vehicle speed measuring device (29), each which is interlocked with the control controller (16), characterized in that the power of the electric machine (8) does not exceed 15% of the engine power (1), the electric machine (8), the clutch (2), the flywheel (10), the speed meter (33 ) are installed coaxially with the crankshaft (9) of the engine (1) inside a single block (35), consisting of the end part of the engine The device (1) and the clutch housing (6) the device is additionally equipped with a sensor (30) of the coolant temperature in the engine cooling system (31) (1), a sensor (32) of the meter (33) of the output shaft speed (7) of the engine (1), sensor (34) of the clutch operation mode (6), which are also interlocked with the control controller (16), moreover, threshold parameters are set for the data coming from all sensors, for example, for engine speed, vehicle speed, coolant temperature, degree of charge unit (11) battery batteries, the positions of the accelerator pedals (25), the brake (27), the clutch (6), the gear lever (2), the ignition key (22), the operating mode of the electronic engine control unit (12) (1), and according to the transmitted data which, according to the set algorithms, control the operation of the hybrid power plant in the following modes: “stop-start”, “idle”, “torque control”, “recovery” and “displacement”. 2. The device for controlling the operation of the hybrid power plant according to claim 1, characterized in that it is equipped with a liquid cooling system according to the bypass circuit with respect to the engine cooling system, in which a common single coolant circulates. 3. The device for controlling the operation of the hybrid power plant according to claim 1, characterized in that its operation is blocked at an outdoor temperature above -10 ° C. 4. The device for controlling the operation of the hybrid power plant according to claim 1, characterized in that it is additionally equipped with a sensor for fixing the position of the vehicle driver in the seat and, in the absence of the driver, blocks the operation of the device. 5. The device for controlling the operation of the hybrid power plant according to claim 1, characterized in that it is additionally equipped with a digital display in front of the driver’s workplace, displaying the operating parameters of the device’s systems.